Poll: Trump beats Warren, Biden in Iowa match-ups

President TrumpDonald John TrumpMulvaney: 'We've overreacted a little bit' to coronavirus Former CBS News president: Most major cable news outlets 'unrelentingly liberal' in 'fear and loathing' of Trump An old man like me should be made more vulnerable to death by COVID-19 MORE holds a slim lead in Iowa over former Vice President Joe BidenJoe BidenThe Hill's Morning Report - Presented by Facebook - Americans debate life under COVID-19 risks Biden set to make risky economic argument against Trump Hillicon Valley: Tech companies lead way on WFH forever | States and counties plead for cybersecurity assistance | Trump weighing anti-conservative bias panel MORE and Sen. Elizabeth WarrenElizabeth WarrenPentagon charts its own course on COVID-19, risking Trump's ire Warren to host high-dollar fundraiser for Biden It's as if a Trump operative infiltrated the Democratic primary process MORE (D-Mass.) in hypothetical match-ups, according to a new poll.

The survey by Emerson College found that 51 percent of registered voters said they would choose Trump over Biden. Respondents favored Trump by the same 51 percent-49 percent margin in a match-up against Warren.

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The reverse was the case for Sen. Bernie SandersBernie SandersHillicon Valley: Tech companies lead way on WFH forever | States and counties plead for cybersecurity assistance | Trump weighing anti-conservative bias panel Biden wins Hawaii primary Warren to host high-dollar fundraiser for Biden MORE (I-Vt.). Fifty-one percent of voters said they would pick him over Trump, who garnered 49 percent support.

The results of all three match-ups fell within the poll's 3.2 percentage-point margin of error.

The survey also found Warren and Biden leading the Democratic field, tied at 23 percent support among Democratic caucusgoers. South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegIt's as if a Trump operative infiltrated the Democratic primary process Here's how Biden can win over the minority vote and the Rust Belt The Hill's Campaign Report: Democrat concedes in California House race MORE was in third place with 16 percent, followed by 13 percent for Sanders.

Researchers surveyed 888 registered voters, including 317 Democratic caucusgoers, from Oct. 13-16. The Democratic caucusgoer responses have a margin of error of plus or minus 5.5. percentage points.

The Iowa caucus is scheduled for Feb. 3.